Calling getContacts throws an exception on release built apk

## 🐛 Bug Report
Exception is thrown after this line:
final dynamic jsonString = await _channel.invokeMethod('getContacts');

Exception details:
E/flutter (31579): [ERROR:flutter/shell/platform/android/platform_view_android_jni.cc(40)] java.lang.AssertionError: AssertionError (GSON 2.8.5): java.lang.NoSuchFieldException: HOME
E/flutter (31579): at com.d.a.f.a(Unknown Source:73)
E/flutter (31579): at com.d.a.f.a(Unknown Source:8)
E/flutter (31579): at com.d.a.f.a(Unknown Source:5)
E/flutter (31579): at com.d.a.f.a(Unknown Source:13)
E/flutter (31579): at com.a.a.c.a$a.a(Unknown Source:12)
E/flutter (31579): at com.a.a.b.onMethodCall(Unknown Source:33)
E/flutter (31579): at io.flutter.plugin.common.MethodChannel$IncomingMethodCallHandler.onMessage(Unknown Source:17)
E/flutter (31579): at io.flutter.view.FlutterNativeView.handlePlatformMessage(Unknown Source:26)
E/flutter (31579): at android.os.MessageQueue.nativePollOnce(Native Method)
E/flutter (31579): at android.os.MessageQueue.next(MessageQueue.java:326)
E/flutter (31579): at android.os.Looper.loop(Looper.java:160)
E/flutter (31579): at android.app.ActivityThread.main(ActivityThread.java:6863)
E/flutter (31579): at java.lang.reflect.Method.invoke(Native Method)
E/flutter (31579): at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:537)
E/flutter (31579): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)
E/flutter (31579): Caused by: java.lang.AssertionError: java.lang.NoSuchFieldException: HOME
E/flutter (31579): at com.d.a.b.a.n$a.(Unknown Source:87)
E/flutter (31579): at com.d.a.b.a.n$24.a(Unknown Source:29)
E/flutter (31579): at com.d.a.f.a(Unknown Source:74)
E/flutter (31579): at com.d.a.b.a.i.a(Unknown Source:42)
E/flutter (31579): at com.d.a.b.a.i.a(Unknown Source:122)
E/flutter (31579): at com.d.a.b.a.i.a(Unknown Source:22)
E/flutter (31579): at com.d.a.f.a(Unknown Source:74)
E/flutter (31579): at com.d.a.b.a.b.a(Unknown Source:26)
E/flutter (31579): at com.d.a.f.a(Unknown Source:74)
E/flutter (31579): at com.d.a.b.a.i.a(Unknown Source:42)
E/flutter (31579): at com.d.a.b.a.i.a(Unknown Source:122)
E/flutter (31579): at com.d.a.b.a.i.a(Unknown Source:22)
E/flutter (31579): at com.d.a.f.a(Unknown Source:74)
E/flutter (31579): at com.d.a.b.a.m.a(Unknown Source:18)
E/flutter (31579): at com.d.a.b.a.b$a.a(Unknown Source:25)
E/flutter (31579): at com.d.a.b.a.b$a.a(Unknown Source:2)
E/flutter (31579): at com.d.a.f.a(Unknown Source:34)
E/flutter (31579): ... 14 more
E/flutter (31579): Caused by: java.lang.NoSuchFieldException: HOME
E/flutter (31579): at java.lang.Class.getField(Class.java:1601)
E/flutter (31579): at com.d.a.b.a.n$a.(Unknown Source:34)
E/flutter (31579): ... 30 more
E/flutter (31579):
F/flutter (31579): [FATAL:flutter/shell/platform/android/platform_view_android_jni.cc(77)] Check failed: CheckException(env).

* The classes are minified after proguard. It might cause the exception.
* Notice this line in the exception: java.lang.NoSuchFieldException: HOME
### Expected behavior
Get the contacts
### Reproduction steps
call getContacts method
### Configuration

**Version:** 0.0.3

**Platform:**
- [ ] :iphone: iOS
- [x] :robot: Android